Fun with Fluorescence!

[seaurchin]

That is so cool. I love fluorescence!

 

[mommylawyer]

This seems like a good place for a fluorescence question: If a pink spinel has faint red fluorescence, would it be noticeable in bright sunlight?

 

[JackTrick]

This seems like a good place for a fluorescence question: If a pink spinel has faint red fluorescence, would it be noticeable in bright sunlight?

I don’t believe so, no.

 

[mommylawyer]

I don’t believe so, no.

Thank you.

 

[glitterata]

I found a pair of what I believe are Sri Lankan hairpins with pink sapphires/rubies set in gilt silver, from c. 1900. The stones fluoresce a beautiful red. (Here I'm shining the blacklight on one of the hairpins in a dim but not dark room. The shots I took in the complete dark came out really blurry.)

 

[Rfisher]

Peach Sapphire

 

[LD]

Can I play? I love love love love fluor and actually I look for it in diamonds. I don't know why but it must be the coloured stoner in me! Here's a few of mine:

6.5ct Ruby


Grey Diamond Heart Cut (I think this is just under 1ct)

 

[Neptune]

Medium fluorescence diamond, spinel, & ruby under UV light. Don't know why the diamond glows blue and green under the same condition.





Afternoon sun light through the window

 

[ItzLog]

To be honest, I'm not quite sure what these are But they glow bright!!

 

[Nosean]

GIA Fancy intense pink 0,09 ct from Leibish.

Strong LW blue fluorescence.

 

[Rfisher]

Fun little lonely guy

 

[MissyBeaucoup]

@Rfisher @Nosean @ItzLog @Neptune @LD @glitterata @fiona00004 @Lexililac

Thanks for playing! It’s great to see all the new pictures!

Gemstones are so fascinating!!

 

[Laurainthesky]

My ebay yellow sapphire surprised me. I didn't expect it to have fluorescence. Its fluorescence was an orangey red under long and a milder orange yellow under short. I looked it up and yellow Sri Lankan sapphires have fluorescence like this.
I wonder how BE treating affects fluorescence. I couldn't find any articles on that topic. I paid a BE price for the sapphire which was sold as heated only.

I was also surprised that my commercial grade ruby outshined everything.

 

[Neptune]

@Rfisher @Nosean @ItzLog @Neptune @LD @glitterata @fiona00004 @Lexililac

Thanks for playing! It’s great to see all the new pictures!

Gemstones are so fascinating!!

I thought of you when I saw this since I read that you like to grow them. I don't have any myself but they are spectacular, if you get it right. lol. It's a fuzzy plant.

 

[Laurainthesky]

I couldn't manage a picture, but I was surprised that my ebay tsavorite had fluorescence while my higher quality one was inert. The ebay one is a lighter tone, so maybe it is just different.

 

[Nosean]

I couldn't manage a picture, but I was surprised that my ebay tsavorite had fluorescence while my higher quality one was inert. The ebay one is a lighter tone, so maybe it is just different.

Your ebay stone has a low iron content. Tsavorite and Merelani Mint are grossulare garnet colored by vanadium. Merelani Mint has a very low iron content - some lighter colored Tsavorite too. The deeper colored Tsavorite shows no fluorescence except a rare variety with a higher chromium content from Kuranze.

Colorless grossular shows fluorescence - the rare colorless Mali garnet (a mix of grossular and andradite) no (iron) .

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[Laurainthesky]

Your ebay stone has a low iron content. Tsavorite and Merelani Mint are grossulare garnet colored by vanadium. Merelani Mint has a very low iron content - some lighter colored Tsavorite too. The deeper colored Tsavorite shows no fluorescence except a rare variety with a higher chromium content from Kuranze.

Colorless grossular shows fluorescence - the rare colorless Mali garnet (a mix of grossular and andradite) no (iron) .

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Cool! Thank you.

 

[rokor]

Here’s a tennis bracelet I recently acquired and a loose ruby. Both are surprisingly fluorescent, I wasn’t expecting either to glow so much.

 

[idola]

I got a black light today and decided to have a look



My padparadschas are obnoxiously pink. I knew that a couple of the diamonds on my ring would be strong because of how they look in sunlight so I was pleased to see that I'm right.



Then a few other pieces:


Lavender spinel, oiled emerald, and blue sapphire. Was surprised to see the blue turn pink, even if only a little!

 

[CaseyLouLou]

Here’s are two of my hot pink spinels that fluoresce. I have had the ring since at least the early 90’s and never knew!

 

[ItsMainelyYou]

Welp, I need a UV light now.

 

[Nosean]

A vivid Green Yellow diamond in direct winter sun.

 

[LilAlex]

it must be the coloured stoner in me!

This is great -- gonna use that!

Well, carefully, on second thought...

 

[CaseyLouLou]

This is great -- gonna use that!

Well, carefully, on second thought...

Ha! I have a thing for pretty flower pots for garden decor and I am always saying that I have a pot addiction….

 

[CaseyLouLou]

A vivid Green Yellow diamond in direct winter sun.

This is amazing. Why does it glow like that? Usually diamonds turn blue right? I’m fascinated.

 

[Nosean]

This is amazing. Why does it glow like that? Usually diamonds turn blue right? I’m fascinated.

Natural-Color Green Diamonds: A Beautiful Conundrum | Gems & Gemology

Characterizes diamonds with exceptionally rare natural green color, based on GIA’s extensive database of samples.

www.gia.edu

This is diamond colored by H3 centers. well explained in the article.

Or a webinar…

 

[CaseyLouLou]

Natural-Color Green Diamonds: A Beautiful Conundrum | Gems & Gemology

Characterizes diamonds with exceptionally rare natural green color, based on GIA’s extensive database of samples.

www.gia.edu

This is diamond colored by H3 centers. well explained in the article.

Or a webinar…

Very interesting!

 

[CBianco]

Had to revive this thread, sorry

 

[Nick_G]

A specimen of emeralds in the matrix from the Panjshir Valley in Afghanistan which fluoresce red in LWUV due to their chromium content:

 

[CaseyLouLou]

Merelani mint garnet and pink spinel